Drop-hammer.



H. E. DERBYSHIRE.

DROP HAMMER.

APPLICATION FILED MAY3, 191s. RENEWED MAY 5, 1914.

1,100,289; Q Patented June 16, 19M

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SHIRE.

MER.

. B NE H. E. DERBY DROP HAM APPLICATION FILED MAY a, 1913 E WED MAY 1, 1 00,289.

June 16,

KEBTS-BHE 5, 1 9 1 4. Patented INVENT l? By- Y ATTORNEY.

CDLUMIIA PLANOGRAPH CD. WASHINGTON. D- C UNITED STATES PATENT OFFIGE.

HENRY E. DERBYSI-IIRE, OF CHAMBERSBURG, PENNSYLVANIA, ASSIG-NOR TO CHAMBERSBURG ENGINEERING COMPANY, OF GHAIVIBERSBURG, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

DROP-HAMMER.

Specification of Letters Patent.

Patented June 16, 1914.

Application filed May 3, 1913, Serial No. 765,235. Renewed May 5, 1914. Serial No. 836,557.

To all whom it may concern:

Be it known that I, HENRY E. DERBY- srnnn, a citizen of the United States, and resident of Chambersburg, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Drop-Hammers, of which the following is a specification.

My invention relates to improvements in drop hammers and more particularly to improvements in the construction and arrangement of the guides carried by the vertical main frame for guiding the ram in its movements, the objects of my invention being to furnish guides which will be very durable, which may be easily and rapidly adjusted to compensate for wear, and which, together with their supporting parts, will be so constructed as to permit the removal of the ram from the machine without disturbing any other parts whenever such removal may, from any cause, be necessary.

In the accompanying drawings forming part of this specification and in which similar letters of reference indicate similar parts throughout the several views: Figure 1, is a front elevation, partly in section, of a drop hammer embodying my improvements; Fig. 2, a front elevation, partly in section, of part of one side of the guide carrying uprights showing the ram guide and means for carrying and for adjusting it; Fig. 3, a section of Fig. 2 on line X-X.

1 is the main frame of the machine, 2 the anvil, 8 the die, 4 the piston rod, 5 the cylinder. All of the above parts, together with their connections, are so well known that detailed description of them will be unnecessary.

The ram 9, which carries the die 8, is guided in its movements by guides 6 which are carried by the main frame 1, they preserve the alinement of the ram and piston rod with relation to the cylinder 5 and must, therefore, as there is very considerable wear between them and the ram, be adjustable. They must, also, be very strong and be rigidly secured to their carrying frame in order to stand the strains to which they are subjected, particularly when work is done off center.

The frame 1 has finished pockets 7 for the guides 6, and the latter are furnished with finishedVs, Fig. 3, which mate with corresponding Vs in the ram 9,.

Upon the outer parts of the guides 6 are heavy lugs 10, preferably rectangular in cross section, which are fitted into corresponding pockets 11 in frame 1. The lugs 10 are tapped to receive the inner end of a bolt 12 the outer end of which is threaded and carries lock nuts 1314 and a washer 15 which engages a spring 16 which is of suflicient strength to develop the full safe value of bolt 12 and which, should the strain upon this bolt become excessive, yields slightly to protect the bolt.

17 is a bolt substantially similar in its arrangement to bolt 12 which is carried by frame 1 and is screwed into the guide 6 near its lower end.

At their outer sides the lower ends of guides 6 are planed taper and engage wedges 18, which are slotted for the passage of bolt 17. This arrangement gives a solid backing of large area to the guide at this point. Below the wedge 18 is a shoe 19 secured in place by a stud 20.

21 are liners between wedge 18 and shoe 19.

22 is a stud carried by frame 1 and engaging the upper outer part of guide 6. This stud is of large diameter, is screwed into frame 1 as shown in Fig. 2, and its end engaging guide 6 is of reduced diameter so that it may be backed off through the threaded hole in frame 1 in case its end is upset by continued use. At its outer end the stud 22 carries lock nuts as do the bolts 12 and 17.

Having thus described the construction of my invention I will now describe its operation.

If it be necessary to move the guides 6 toward one another to compensate for wear the middle bolt 12 is slacked off and the top stud 22 is screwed in. The bottom stud 17 is also slacked otl and the wedge 18 is driven up and an additional liner or liners are inserted between its bottom and the top of shoe 19. This being done bolts 17 and 12 are tightened and lastly the stud 22 is set up and locked. The guide is set outward by reversing the above operation. By proper manipulation either the top or bottom of the guide may be moved in or out. Should the piston 4 break, or should it be necessary for any other reason to remove the ram from the machine, all of the studs and bolts 12, l722 are slacked oil and the stud 17 is removed as is also the Wedge support or shoe 19. The wedge 18 may now belowered so as to permit the guide 6 to be moved outward in its seat until its Vs are out of engagement with the Vs of the ram. When this is don the ram can be removed without dismantling any other part of the machine.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

1. The combination with the ram and frame of a drop hammer, of guides carried in pockets in said frame, wedges interposed between said frame and the lower ends of said guides, removable vertical supports for said wedges, and means for movably securing said guides to said frame.

2. The combination with the ram and frame of a drop hammer, of guides having outwardly projecting substantially central lugs adapted to be carried in pockets in said frame, adjustable cushioned means for securing said lugs to said frame, adjustable cushioned means for securing the lower ends of said guides to said frame, adjustable abutments carried by said frame for engaging the outer upper ends of said guides, wedges interposed between said frame and the lower outer ends of said guides, and removable adjustable means for supporting the lower ends of said wedges.

3. The described means for adjusting the lower tapered end of an adjustable guide for a drop hammer ram, consisting, in combination with said guide, of a vertically disposed wedge and a removable shoe bolted to the main frame beneath said wedge and supporting said wedge.

4. In a drop hammer, in combination, a frame furnished with pockets for adjustably carrying ram guides, said guides, adjustable abutments carried by said frame for the upper outward ends of said guides, a Wedge in said pockets engaging the lower outer faces of said guides, means for securing said guides to said frame, removable shoes secured to said frame, and liners interposed between said shoes and wedges.

5. In a drop hammer, in combination, a frame furnished with pockets for adjustably carrying ram guides, said guides, supporting lugs central of said guides, a clamp screw for said lugs, adjusting screws carried by said frame for the tops of said guides, slotted wedges interposed between said frame and the bottom of said guides, clamp screws carried by said frame passing through the slotted wedges and engaging the lower ends of said guides, and a removable means for carrying the lower ends of said wedges.

HENRY E. DERBYSHIRE.

Witnesses:

LILLIAN M. WOLF, A. A. LONGAKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent: Washington, D. C. 

